ASL Remote Sensing

Environmental Applications

Remote sensing is an excellent tool for environmental studies because it provides synoptic coverage of large or hard-to-access areas.  Environmental impacts can be assessed from changes in images acquired repeatedly over the long or short term. Remote sensing image analysis can provide a perfect complement to detailed in situ measurements.

Effluent tracking

Effluent discharges can be tracked from their multispectral or thermal signals, or by using fluorescent dyes.




(Pulp mill effluent mapping at Prince George, British Columbia)




ASL Remote Sensing

Water quality

Airborne or satellite imagery can be used to assess temporal and spatial variations of water quality parameters such as turbidity, chlorophyll, temperature and CDOM (Coloured Dissolved Organic Matter), in freshwater and marine environments.




(Water quality in tailings ponds at Key Lake, Saskatchewan)

ASL Remote Sensing


Oil spill detection

ASL Borstad has undertaken a number of oil spill-related projects involving the acquisition of aerial multispectral imagery after a spill, mapping of oil slicks, and damage assessment.



(Oil spill off the Shetland Islands, UK, from CASI imagery)


ASL Remote Sensing

Mine reclamation

We have used repeated annual surveys to produce an image time series that give a detailed, quantitative picture of the trends in revegetation across a reclaimed minesite.



(Vegetation reclamation at Highland Valley Copper Mine,
British Columbia)



ASL Remote Sensing

Climate change

ASL Borstad’s archive of image and environmental data is well suited to studies of climate change, on land, in the ocean and in the Arctic.



(Vegetation changes at the Anderson River Delta Bird Sanctuary,
Northwest Territories, 1972-2003)



Sample papers on Environmental Applications

ASL Remote Sensing




ASL Remote Sensing